Generac Protector Liquid Cooled (Gas/Diesel) Evolution e-Code error code fault list with troubleshooting/repair guide

[Chris]

This is a list of the Generac Protector Evolution e-Codes (alarm codes) that you may see on the Protector Diesel and Gaseous LCD display. Under each is a brief description of what the problem is and the possible causes. Note that not all alarm codes pertain to every unit. Some may be for gaseous units only and likewise some may only be for Diesel units. This list is designed for use with Protector Evolution Liquid Cooled products ONLY and even though some e-Code numbers are the same as the Air Cooled units, this list and troubleshooting topics should not be used for Air Cooled. For the Air Cooled e-Code alarm & fault list, see here: viewtopic.php?f=6&t=14
If you need more help, please post a new topic with your particular information so that we can help! Make sure to include as much information as possible about what the installation looks like and what the problem is and when it occurs.

PLEASE NOTE THAT THIS 2020 UPDATED LIST WAS CUSTOM WRITTEN BY ME (CHRIS FLAGG), FOR THIS SITE AND IF SEEN ELSEWHERE WAS COPIED FROM THIS ORIGINAL POST...THIS LIST IS NOT TO BE COPIED WITHOUT WRITTEN PERMISSION

Controller Fault - Internal Harness Loop Broken 180
ALARM
The external LCD display board is not able to communicate with the controller's main board. This alarm is shown by the display board and not the main board. The main board and alarm logs won't show this alarm in the history. The controller has an internal problem and should be replaced.

Controller Fault - Internal Harness Loop Broken 1001
ALARM
The main board is not seeing communicate from the LCD display board. The controller has an internal problem and should be replaced.

Overcrank 1100
ALARM
This is a more common error code. Basically this means that the controller is telling the engine to start, but it cannot start for some reason. The controller has verified that the engine is actually cranking, but not starting. This is most likely fuel or maintenance related... Check to make sure that the fuel supply is on and if on LP gas or Diesel, the tank is not empty.

Overcrank 1101 (This ONLY pertains to Liquid Cooled NG and LP gens, not Diesel)
ALARM
This overcrank alarm is specific to a fuel pressure problem. When the unit is cranking, if fuel pressure drops for more than 1.2 seconds, this alarm is triggered. Check the incoming fuel system and fuel pressure switch for issues.

Overspeed 1200
ALARM
This overspeed e-code is for prolonged overspeed (Hz is over set threshold). This means that for 3 seconds, the frequency (engine speed) was 72Hz or above on a 60Hz unit or 60Hz or above on a 50Hz unit (not a US unit). Most likely cause is a Bosch actuator issue, throttle linkage issue, or some other engine speed related failure. The Bosch actuator should be checked for damage or something jamming the throttle plate which is normally closed when not powered.

Overspeed 1201
ALARM
This overspeed e-code is for prolonged overspeed (Hz is over set threshold), but that the throttle position was stuck open as measured by the controller. This means that for 3 seconds, the frequency (engine speed) was 72Hz or above on a 60Hz unit or 60Hz or above on a 50Hz unit (not a US unit). Most likely cause is a Bosch actuator issue, throttle linkage issue, or some other engine speed related failure. The Bosch actuator should be checked for damage or something jamming the throttle plate which is normally closed when not powered.

Overspeed 1204
ALARM
This overspeed e-code is from the external Ignition Module if so equipped. This is a CANBus alarm and triggered when the Ignition Module's speed is detected at more than 30% above normal. (Does not apply to Diesel powered units)

Overspeed 1205
ALARM
This overspeed e-code is for instantaneous overspeed (Hz is over set threshold). This means that the frequency (engine speed) was very high. 75Hz or above on a 60Hz generator, or 62Hz or above on a 50Hz model (again, not a US generator). The same causes as the above overspeed code. Bosch actuator issues or a linkage problem.

Overspeed 1206
ALARM
This overspeed e-code is for instantaneous overspeed (Hz is over set threshold), but that the throttle position was stuck open as measured by the controller. This means that for 3 seconds, the frequency (engine speed) was 75Hz or above on a 60Hz unit or 62Hz or above on a 50Hz unit (not a US unit). Most likely cause is a Bosch actuator issue, throttle linkage issue, or some other engine speed related failure. The Bosch actuator should be checked for damage or something jamming the throttle plate which is normally closed when not powered.

Low Oil Pressure 1300
ALARM
This is the normal shutdown alarm for low oil or low oil pressure and may be caused by a couple of things: 1. The oil level is low and should be checked and filled as needed (most common during extended outages). 2. The low oil pressure (LOP) switch is faulty and the oil pressure should be checked and the switch replaced. 3. Some internal problem with the engine not building oil pressure. This would require an oil pressure test to verify.

High Temperature 1400
ALARM
The high engine temperature sensor has detected 246°F for more than 1 second and shut the unit down for exceeding the engine temp high limit. The unit should be checked for debris blocking the vents that might be restricting airflow. Cooling system should be checked for proper coolant level and coolant quality. If nothing is found, the high temp switch and its wiring should be checked.

High Temperature 1401
ALARM
The high engine temperature alarm has been triggered by the fuel pressure switch in this case. If fuel pressure switch opens for more than 1.2 seconds during running this alarm triggers. Lean fuel mixture can cause increased engine temps and failure. Fuel pressure, fuel system and the pressure switch should be tested to make sure all are within spec. (Only applys to NG/LP powered units)

RPM Sensor Loss 1500
ALARM
Controller is missing magnetic pickup pulses. Mag pickup should be tested for resistance, alignment, and to make sure no metal shavings or debris have stuck to the sensor pin.

RPM Sensor Loss 1516
ALARM
This is an engine cranking fault with a low fuel pressure issue. Fuel pressure during cranking was measured as low for more than 1.2 seconds and has triggered an RPM fault. Fuel system should be checked for dirt, air in the line, pressure, and sizing.

RPM Sensor Loss 1517
ALARM
This is an engine running fault with a low fuel pressure issue. Fuel pressure during running was measured as low for more than 1.2 seconds and has triggered an RPM fault. As like the above issue, fuel system should be checked for dirt, air in the line, pressure, and sizing.

RPM Sensor Loss 1518
ALARM
This is a more common RPM sensor fault. This alarm is triggered when the RPM sensor (mag pickup) detects no crank pulses for 75ms straight while the starter is active and triggers the alarm. Caused when the controller has told the engine to crank and the engine does not. Possible causes would be a mag pickup problem, starter issue, battery problem, bad battery cables or connections, or a starter solenoid issue.

RPM Sensor Loss 1519
ALARM
This alarm is triggered when the RPM sensor (mag pickup) detects no crank pulses during running RPM and triggers the alarm. Possible causes would be a mag pickup problem, fuel issue, or other stalling problem.

RPM Sensor Loss 1520
ALARM
Basically the same alarm as the above 1518. This alarm is triggered when the RPM sensor (mag pickup) detects missing or no crank pulses for 75ms straight and triggers the alarm. Caused when the controller has told the engine to crank and the engine does not. Possible causes would be a mag pickup problem, starter issue, battery problem, bad battery cables or connections, or a starter solenoid issue.

RPM Sensor Loss 1521
ALARM
Again, very similiar alarm to 1519. This alarm is triggered when the RPM sensor (mag pickup) detects missing or no crank pulses during running RPM and triggers the alarm. Possible causes would be a mag pickup problem, fuel issue, or other stalling problem.

Underspeed 1600
ALARM
Unit has slowed to <83.3% of its rated speed at 60Hz or <66.6% of rated speed at 50Hz. Most likely problem is that the unit is overloaded or something has tried to turn on that overloaded the unit. Could also be fuel related or a Bosch actuator or throttle linkage issue.

Underspeed 1601
ALARM
This alarm is triggered when low fuel pressure was measured for more than 1.2 seconds before the Underspeed alarm was triggered. Possible causes would be a low fuel pressure problem, undersized fuel line or fuel supply, low LP level in tank, etc.

Underspeed 1602
ALARM
This alarm is triggered when the throttle is measured as stuck closed. Possible causes are a damaged Bosch actuator, something jamming the throttle plate, or possible bad connection to the throttle actuator.

Overvoltage 1800
ALARM
The alarm is set when the unit's rated voltage output is exceeded by 10% above normal for a 3 second period of time. A voltage test should be done to determine the problem. Most likely a bad AVR (automatic voltage regulator) which is internal to the Evolution control board, or bad sensing wiring connection.

Overvoltage 1801
ALARM
The alarm is instantly set when the unit's rated voltage output is exceeded by 30% above normal. A voltage test should be done to determine the problem. Most likely a bad AVR (automatic voltage regulator) which is internal to the Evolution control board, or bad sensing wiring connection.

Overvoltage 1803
ALARM
The alarm is set when the unit's rated voltage output is exceeded but because the unit's RPM is more thatn 25% above normal causing the overvoltage. Testing for overspeed listed above should be performed, since this is really not a voltage output issue.

Undervoltage 1900
ALARM
e-Code is displayed when the output voltage is below 80% of the unit's rated output for 10 or more seconds. This could be caused by several different issues and will require more in depth troubleshooing to determine the issue.

Undervoltage 1901
ALARM
A sudden drop in voltage will set this alarm. Output voltage is less than 15V and for more than 2 seconds. This can also occur during a stall condition which may be fuel related and can throw troubleshooting in the wrong direction. All engine functions should be checked as well as voltage. Causes could also be a stator or rotor problem, brush problem, unit being overloaded, or wiring problems.

Undervoltage 1902
ALARM
Fault is displayed when both zero crosses are missing from the controller's input for 1.5 seconds or more. Could be a faulty excitation winding, zero cross circuit, loose wiring, or field boost hardware problem.

Undervoltage 1903
ALARM
E-Code Fault is triggered when little to no output voltage is measured. Generator output is less than 120V. Same troubleshooting steps for the other Undervoltage alarms.

Undervoltage 1904
ALARM
No field current but controller detects DPE voltage. Should check brush hardware, brushes and check for loose wiring.

Undervoltage 1905
ALARM
eCode is set when generator is running at lower than normal speed for more than 30 seconds. Fuel system, engine governor and other issues related to underspeed alarms should be tested.

Undervoltage 1916
ALARM
Single Zero Cross is missing for more than 1.5 seconds. Possible causes are a faulty excitation winding, field boost failure, wiring issue or other voltage output issues listed above.

Wiring Error 2099
ALARM
The controller's wiring on the customer side is most likely miswired. This is normally caused when the high and low voltage wiring connections (194, 23, N1, N1 and T1) are confused during the installation. Normally this alarm won't appear after the initial install since that wiring doesn't normally change after the installation.

Overload Remove Load 2101
ALARM
Alarm is triggered when the unit is overloaded and DPE field current is measured higher than normal. The loadshed modules (if in use) should be checked, load should be removed, or load shedding should be installed to prevent the overload from happening.

Fuse Problem 2400
ALARM
Missing, blown, or damaged 7.5A ATO type fuse in the controller (located under the rubber USB port flap on the top of the Evolution Controller). Fuse problem must be detected for more than 1.5 seconds. Firmware older than 1.30.

Bosch Actuator 2500
ALARM
Command and positive feedback from the Bosch actuator don't match or are taking too long to respond. Possible causes would be a bad Bosch actuator, or loose wiring.

Bosch Actuator 2501
ALARM
Throttle stuck open. Governor in open position (commanded otherwise) for more than 1 second. Command and positive feedback from the Bosch actuator don't match or are taking too long to respond. Possible causes would be a bad Bosch actuator, or loose wiring.

Bosch Actuator 2502
ALARM
Throttle stuck closed. Governor in closed position (commanded otherwise) for more than 1 second. Command and positive feedback from the Bosch actuator don't match or are taking too long to respond. Possible causes would be a bad Bosch actuator, or loose wiring.

Ignition Fault 2600
ALARM
General ignition fault. Could be caused by any of several ignition issues from bad coils to wiring. Ignition system should be checked for issues.

Ignition Fault 2601
ALARM
Missing camshaft pulse. Camshaft sensor isn't sending feedback to controller. Could be a bad sensor, misalignment of the sensor, loose wiring, or an engine issue.

Ignition Fault 2602
ALARM
Crank circuit issue (for units with an external ignition module). Check the crank sensor, wiring and ignition module for issues.

Overcurrent Cylinder 1 2611
ALARM
Cylinder #1 coil pack current too high for more than 1 second. Cylinder 1's coil pack should be tested and replaced if there are issues.

Overcurrent Cylinder 2 2612
ALARM
Cylinder #2 coil pack current too high for more than 1 second. Cylinder 2's coil pack should be tested and replaced if there are issues.

Overcurrent Cylinder 3 2613
ALARM
Cylinder #3 coil pack current too high for more than 1 second. Cylinder 3's coil pack should be tested and replaced if there are issues.

Overcurrent Cylinder 4 2614
ALARM
Cylinder #4 coil pack current too high for more than 1 second. Cylinder 4's coil pack should be tested and replaced if there are issues.

Overcurrent Cylinder 5 2615
ALARM
Cylinder #5 coil pack current too high for more than 1 second. Cylinder 5's coil pack should be tested and replaced if there are issues.

Overcurrent Cylinder 6 2616
ALARM
Cylinder #6 coil pack current too high for more than 1 second. Cylinder 6's coil pack should be tested and replaced if there are issues.

Overcurrent Cylinder 7 2617
ALARM
Cylinder #7 coil pack current too high for more than 1 second. Cylinder 7's coil pack should be tested and replaced if there are issues.

Overcurrent Cylinder 8 2618
ALARM
Cylinder #8 coil pack current too high for more than 1 second. Cylinder 8's coil pack should be tested and replaced if there are issues.

Overcurrent Cylinder 9 2619
ALARM
Cylinder #9 coil pack current too high for more than 1 second. Cylinder 9's coil pack should be tested and replaced if there are issues.

Overcurrent Cylinder 10 2620
ALARM
Cylinder #10 coil pack current too high for more than 1 second. Cylinder 10's coil pack should be tested and replaced if there are issues.

Undercurrent Cylinder 1 2621
ALARM
Cylinder #1 coil pack current too low for more than 1 second. Cylinder 1's coil pack should be tested and replaced if there are issues.

Undercurrent Cylinder 2 2622
ALARM
Cylinder #2 coil pack current too low for more than 1 second. Cylinder 2's coil pack should be tested and replaced if there are issues.

Undercurrent Cylinder 3 2623
ALARM
Cylinder #3 coil pack current too low for more than 1 second. Cylinder 3's coil pack should be tested and replaced if there are issues.

Undercurrent Cylinder 4 2624
ALARM
Cylinder #4 coil pack current too low for more than 1 second. Cylinder 4's coil pack should be tested and replaced if there are issues.

Undercurrent Cylinder 5 2625
ALARM
Cylinder #5 coil pack current too low for more than 1 second. Cylinder 5's coil pack should be tested and replaced if there are issues.

Undercurrent Cylinder 6 2626
ALARM
Cylinder #6 coil pack current too low for more than 1 second. Cylinder 6's coil pack should be tested and replaced if there are issues.

Undercurrent Cylinder 7 2627
ALARM
Cylinder #7 coil pack current too low for more than 1 second. Cylinder 7's coil pack should be tested and replaced if there are issues.

Undercurrent Cylinder 8 2628
ALARM
Cylinder #8 coil pack current too low for more than 1 second. Cylinder 8's coil pack should be tested and replaced if there are issues.

Undercurrent Cylinder 9 2629
ALARM
Cylinder #9 coil pack current too low for more than 1 second. Cylinder 9's coil pack should be tested and replaced if there are issues.

Undercurrent Cylinder 10 2630
ALARM
Cylinder #10 coil pack current too low for more than 1 second. Cylinder 10's coil pack should be tested and replaced if there are issues.

Internal Ignition Missing Cam 2650
ALARM
Engine cranked for 4 seconds and no camshaft pulses were detected from the sensor. Possible causes would be a bad camshaft sensor, loose or damaged wiring, or an internal engine issue.

External Ignition Missing Cam 2651
ALARM
Engine cranked for 4 seconds and no camshaft pulses were detected from the external ignition module. Possible causes would be a bad camshaft sensor, bad ignition module, loose or damaged wiring, or an internal engine issue.

Internal Ignition Missing Crank Pulses 2660
ALARM
Engine crank signal missing. Could be a bad crank sensor (magnetic pickup), loose or damaged wiring, or an internal engine issue.

External Ignition Missing Crank Pulses 2661
ALARM
Engine crank signal missing from external ignition module. Could be a bad crank sensor (magnetic pickup), bad ignition module, loose or damaged wiring, or an internal engine issue.

CAN Bus 2671
ALARM
CAN Bus error reported by external ignition module. Likely causes are a bad ignition module, damaged communication wiring between ignition module and controller, incorrect parameter group programmed into controller, or if the controller was recently swapped, incorrect bootup procedure. (Controller MUST be booted in correct order)

CAN Bus 2672
ALARM
CAN Bus error reported by Diesel unit's ECU module. Possible causes are bad ECU, programming issue, damaged or loose CAN Bus communication wiring, or as mentioned above, control panel was swapped and not booted properly.

Fuel Level Low 2700
ALARM
Diesel unit's fuel level is too low (lower than 10% for 60 seconds). Fuel level should be checked and fuel added if it's low. Fuel level sender could be failing, or wiring have been damaged.

Low Coolant 2720
ALARM
Low coolant was detected for more than 5 seconds. Coolant level should be checked ONLY when the unit has cooled. Coolant level sender may be failing or the probe tip may have debris building on the end.

Very Low Battery 2751
ALARM
Controller detected that the battery voltage dropped below 9.0 VDC for 60 seconds. Battery should be removed and load tested and the charging system should be inspected. Likely cause would be a bad alternator or alternator voltage regulator if so equipped.

ESTOP Pressed/Aux Shutdown 2800
ALARM
This ONLY pertains to newer Evolution Protector units with a external shutdown switches installed. Liquid cooled units now have 2 switches installed, 1 in the control panel area under the cover and to the upper corner, and one externally mounted on the removable access panel covering the controller and main breaker. They must be on for the unit to run. If they are both on, check the wiring and connections for problems.

Hall Calibration 2810
ALARM
The controller detected that hall calibration (an internal issue) has not been performed. Recommended action is to update the panel's firmware and reboot the panel. Controller may have an internal issue and need to be replaced.

Diesel ECU Fault 2900
ALARM
Diesel unit's ECU is reporting a problem. J1939 CAN diagnostics reporting a fault message within the ECU

Low Fuel Level 2680
WARNING
On Diesel Protector units, low fuel level (above 10%, but below 20%) was detected for more than 60 seconds. Add fuel. Check the fuel level sender if fuel is full.

Low Fuel Pressure 2690
WARNING
On Gaseous Protector units, low fuel pressure was detected for more than 60 seconds. Fuel pressure should be checked. Gas valves should be checked to make sure they are not turned off.

Ruptured Tank 2710
WARNING
On Diesel Protector units, fuel was detected in the outer basin tank. Fuel tank inspection should be performed.

Exercise Set 2730
WARNING
Exercise has never been set. Set the exercise time in the Edit menu.

Low Battery 2750
WARNING
The warning is triggered when the battery voltage drops below 12.1 volts for 60 seconds or more. Charger output should be checked as well as the alternator. Battery should be load tested once charged. Battery could be bad or charger/alternator could be faulty.

Battery Problem 2760
WARNING
This warning is triggered when the battery voltage is below 12.52 volts or more than 600mA of charge current is detected at the end of an 26 hour charge cycle. Battery should be removed and tested. If bad, replace.

Charger Warning 2770
WARNING
Warning is displayed when the battery voltage is above 16.1 volts. Battery should be tested as well as the charger/alternator.

Charger Missing AC 2780
WARNING
This is a very common alarm to see during install if the battery was installed before the charger was powered on, or during a power outage where the unit isn't running for some reason. It's displayed when the T1 wire (120V power to the battery charger circuit in the Evolution controller) isn't live for more than 5 minutes. If power is out and the unit isn't running this alarm will be triggered since the battery charger is not getting power from the utility. Eventually the battery will die if left for several hours without a charger input. If this is a new installation, all of the control wiring should be checked to make sure that one or more of the wires isn't loose, transposed, or missing completely... The T1 fuse should also be tested. On Evolution Protector generators a neutral is REQUIRED to be connected to the 120V battery charger connection terminal block, not just T1.

SEEPROM Abuse 2790
WARNING
Detected when the controller wrote to the EEPROM more than 500 times in 4 minutes. Most likely an internal controller issue and if it continues, the controller will need replacment.

Gaseous Emmissions 2910
WARNING
Air/Fuel mixture is too rich for more than 10 seconds, or mix is too lean for more than 60 seconds. Fuel system should be checked for issues. A/F soleniod system should be checked for leaks and repaired.

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Color legend for this list:
Displayed Alarm message/Warning message
e-Code number
Description and possible causes/fixes

[Roy Vecchio]

Code 2800 displayed and flashing red stop light. I have checked and both aux switch’s are in the on position, is there a way to reset code so engine can start ? Thanks

[Chris]

You should be able to push 'Off', then follow the prompts.

[joze66]

Generac series 2000 lp wont start . replaced governor driver. TYpe SG0025-G363still wont start . suspect governor but dont know how to check it. older model s/n 3924970100,
ty

[Chris]

Can you start a new topic with some more information about which engine this has and what governor?